Steellet
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[ STEELLET / LOCAL UTILITY ]

Seed conversion,
without a server.

Convert a 12- or 24-word English BIP39 mnemonic, entropy hex, and binary locally. A 24-word result can also be mapped across the current 16-layer × 16-position Steellet architecture.

For real funds: use a dedicated offline device.Load once, wait for “cached,” disconnect every network, then enter the secret. Nothing is uploaded or persisted by this tool.

BIP39 INPUT

Recovery words

0 / 12 or 24 words

[ IMPORTANT DISTINCTIONS ]

Three values.
Different jobs.

Entropy
128 or 256 random bits: the reversible payload encoded by the mnemonic and mapped into Steellet.
Mnemonic
12 or 24 words carrying entropy plus a 4- or 8-bit checksum.
BIP39 seed
A 512-bit result made from mnemonic + optional passphrase. It is not reversible to the words.